I am tired of constantly seeing scaling dungeons and raids. It is a bad and lazy design that completely puts me, and MANY others, off doing it.
My motivation to do a raid is to "beat it". My motivation to do content before it, is to get gear so I can do the later content.
Once I beat Illidan in TBC, I quit raiding. I know sunwell came after, but my motivation was set on Illidan. Once I beat Lich King on NORMAL difficulty with a bunch of dumb catch up week stacks in WotLK, I quit raiding. In Cataclysm, I only did 10 man, cuz it's less effort to beat the content. After LFR, I have quit raiding completely.
This whole M+ system is so unbelieveably unfun. I enjoyed Kara in Legion as a "megadungeon" with only 1 difficulty. How hard is it to keep dungeons being 1 difficulty?
People started bitching a little in WotLK when there was hard modes in Ulduar, and when it turned to a UI choice in Trail raid, it really started rubbing people the wrong way.
Classic has no scaling. TBC has only scaling in Dungeons (would have been better without heroics too). These are the best parts of WoW. Coincidence? I think not...
Shadowlands, same stupid scaling systems.
How exactly is it fun to do the same boss fight again with higher HP/DPS?
EDIT:
Look at games like Dark Souls, being much more enjoyable exactly BECAUSE they don't have a difficulty slider.
What we need is some raids being easy (early ones) and some being hard (last raid of the expansion). Then guilds can get stuck at whatever skill level they are at. It's completely OK that Method beats the early raids in a week.